MALICIOUS — 3a51883da23d1ace8b5557cc069aa602c041c14f3a0eb6fd91043c9418d69bb2

MALICIOUS — 3a51883da23d1ace8b5557cc069aa602c041c14f3a0eb6fd91043c9418d69bb2 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 4 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.

Identification

SHA-256: 3a51883da23d1ace8b5557cc069aa602c041c14f3a0eb6fd91043c9418d69bb2
SHA-1: b5deb127989d2c80ca7ed78808d8d73614ee27f5
MD5: 4dcb2b7cc6876d9e4d90b7fac0bede02
imphash: e10b385d3760c25155223c1cd06e914f
ssdeep: 1536:f9pY7xFAYZ4/2nDxHnSh/2BIr7fbmKBKpKrKAKcSu5X:LY7Ut2BIr7DmKBKpKrKAKeX
TLSH: T13E387347091BD499E0F7E6BF4C597E8E14CF26094B77402C1DEA200E599A5B3E028F9E
Submitted as: 3a51883da23d1ace8b5557cc069aa602c041c14f3a0eb6fd91043c9418d69bb2
File type: pe · Size: 77824 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (4 of 56 engines)

ClamAV (daily): Win.Worm.Vobfus-7460240-0
Microsoft Defender: Worm:Win32/Vobfus.AC
Emsisoft (Emergency Kit): Gen:Trojan.Chinky.2
Kaspersky (KVRT): Worm.Win32.VBNA.btnv

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 12 weighted signals:

ClamAV (daily) flagged Win.Worm.Vobfus-7460240-0 (rule Win.Worm.Vobfus-7460240-0) - engine signal, weight 0.90, confidence 0.95
1 behavioral detection(s) across 1 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.60, confidence 0.90
Microsoft Defender flagged Worm:Win32/Vobfus.AC (rule Worm:Win32/Vobfus.AC) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Trojan.Chinky.2 (rule Gen:Trojan.Chinky.2) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Worm.Win32.VBNA.btnv (rule Worm.Win32.VBNA.btnv) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Registry Run Key Persistence (T1547.001) (rule Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
Contacted 2 external host(s) and 5 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082, T1622, T1497.001 - dynamic signal, weight 0.40, confidence 0.75
enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60
Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

52982 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\xaqog.exe - b7e89b4fecb5b29e698ee3643248b8bc322f28e2e963045668ca3b1f4c0e4331
316bc0d2273f1b8a2f3f6933f32bcb6559fd992c49b6db86267b1fadf8d682a8 - 316bc0d2273f1b8a2f3f6933f32bcb6559fd992c49b6db86267b1fadf8d682a8
d0b718871990afb3c6f20765a8bb99777a46ccdf2be52781e2edeca265ce625f - d0b718871990afb3c6f20765a8bb99777a46ccdf2be52781e2edeca265ce625f
3908e9886842e9ed7cdede7657b21f20ef15ae8c3aa97355615895887017c524 - 3908e9886842e9ed7cdede7657b21f20ef15ae8c3aa97355615895887017c524

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

ns4.thepicturehut.net

Embedded IP addresses

51.116.253.168
52.250.34.200
4.230.171.124
74.178.76.54
4.150.223.96
74.178.76.128
85.210.193.152
172.64.154.167
52.110.12.21
52.110.12.20
20.42.65.85
4.207.44.71
135.233.45.223
72.145.35.96
52.148.114.188
52.110.12.28
52.110.12.31

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report